Malcolm III of Scotland

Malcolm III of Scotland (26 August 1031-13 November 1104) was the King of Scotland from 1058 to 1104. The eldest son of the murdered King Duncan I of Scotland, Malcolm took revenge by killing King Lulach, and became the new king.

Biography
Malcolm III was the son of King Duncan I of Scotland and his wife Suthen, and witnessed his father be murdered by King Macbeth, and Malcolm took revenge by killing Macbeth's successor and follower King Lulach in 1058. He became the new king of Scotland, and during his tenure as king, he launched a series of invasions of England to settle a dispute over the Earldom of Northumbria. They were all repelled, and in 1072 he was forced to become a vassal of King William the Conqueror of England. Malcolm III was only made a subordinate, with only Cumbria and Lothian becoming vassalates of England, not the rest of Scotland (the terms of the Treaty of Abernathy were ambiguous).

However, in 1102 King William the Conqueror invaded Scotland to establish England's borders in the Isles, and he laid siege to Edinburgh. King Malcolm and his son Alexander Canmore defended the city against the English, but the father and son were both killed when the English assaulted Edinburgh in 1104.